On 5/31/2025 6:26 AM, Alan Grayson wrote:
On Friday, May 30, 2025 at 5:01:10 AM UTC-6 John Clark wrote:
On Wed, May 28, 2025 at 5:04 PM Alan Grayson <[email protected]>
wrote:
*>> The James Webb telescope has discovered a galaxy with
the red shift of 14.44. From that you can calculate that
it took light 13.5 billion years to reach us, it started
its journey only 280 million years after the Big Bang.
And because of the expansion of the universe the galaxy is
now 34.7 billion light years from the Earth. What I find
really fascinating is that although we can see the galaxy
if we tried to send a laser beam to it, because of the
expansion of the universe, the beam would _NEVER_ reach
it; in fact that's true for any galaxy that has a red
shift larger than 1.8, and this one had a red shift of
14.44! *
*James Webb telescope breaks its own record again,
discovering farthest known galaxy in the universe*
<https://www.livescience.com/space/astronomy/previously-unimaginable-james-webb-telescope-breaks-its-own-record-again-discovering-farthest-known-galaxy-in-the-universe>
/> Does a red shift of 1.8 imply recession at light speed?/
*If you're looking at a galaxy that has a red shift of 1.8then
you're looking at how that galaxy looked 10.2 billion years ago,
back then it was not moving away from us faster than the speed of
light but today it is,*
*Applying Hubble's law, the rate of expansion in the early universe
was hugely greater than it is today. If that's correct, how can you
claim that if 10.2 billion years ago it was not receding faster than
light speed (which is possible), but today it is (which seems
impossible)? AG*
*
Hubble expansion is not a speed, it's a speed per unit distance. Even if
the Hubble parameter were much higher the past, a galaxy that was then
much closer would be moving away more slowly.
Brent*
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